Answer this question truthfully
### Question: What are the symptoms of Spinal muscular atrophy?
### Response: Infants with SMA type I (the most severe form of SMA) are born with very decreased muscle tone, weak muscles, and feeding and breathing problems. With SMA type III (the mildest form), symptoms may not appear until the second year of life.
Often, weakness is first noted in the shoulder muscles and proximal leg muscles. Weakness gets worse over time and will eventually become severe.
Symptoms in an infant:
Breathing difficulty Feeding difficulty Floppy infant (poor muscle tone) Lack of head control Little spontaneous movement Progressive weakness (older infant to toddler) Very weak infant
Symptoms in a child:
Frequent, increasingly severe respiratory infections Nasal speech Worsening posture